公开(公告)号：NO990078A

公开(公告)日：1999-01-08

申请号：NO990078

申请日：1999-01-08

Applicant: BASF AG

Inventor： DYLLICK-BRENZINGER RAINER ,  MEIXNER HUBERT ,  LINHART FRIEDRICH ,  M NCH DIETMAR ,  GERBER KLAUS-DIETER ,  DIRKS BERND ,  BAUMANN PETER

IPC: D21H17/45 ,  D21H17/29 ,  D21H17/37 ,  D21H17/56 ,  D21H17/68 ,  D21H23/14 ,  D21H17

CPC classification number: D21H23/14 ,  D21H17/29 ,  D21H17/375 ,  D21H17/455 ,  D21H17/56 ,  D21H17/68

公开(公告)号：CA2258569A1

公开(公告)日：1998-01-15

申请号：CA2258569

申请日：1997-07-07

Applicant: BASF AG

Inventor： M NCH DIETMAR ,  GERBER KLAUS-DIETER ,  BAUMANN PETER ,  DIRKS BERND ,  DYLLICK-BRENZINGER RAINER ,  MEIXNER HUBERT ,  LINHART FRIEDRICH

IPC: D21H17/45 ,  D21H17/29 ,  D21H17/37 ,  D21H17/56 ,  D21H17/68 ,  D21H23/14

Abstract: The invention relates to a process for producing paper and cardboard by dehydration of pulps, forming sheets and drying said sheets. Polyethylene imines of a molar mass Mw of greater than 500 000 or polymers containing vinyl amine units and having a molar mass of 5000 to 3 million are added to the pulps and subsequently, polymers containing cationic polyacrylic amides or vinyl amine units are added to said pulps, the molar masses Mw of the polymers being at least 4 million in each case. The pulp is then subjected to at least one shearing stage and flocculates by addition of bentonite, colloidal silicic acid or clay.

公开(公告)号：NO990078D0

公开(公告)日：1999-01-08

申请号：NO990078

申请日：1999-01-08

Applicant: BASF AG

Inventor： DYLLICK-BRENZINGER RAINER ,  MEIXNER HUBERT ,  LINHART FRIEDRICH ,  M NCH DIETMAR ,  GERBER KLAUS-DIETER ,  DIRKS BERND ,  BAUMANN PETER

IPC: D21H17/45 ,  D21H17/29 ,  D21H17/37 ,  D21H17/56 ,  D21H17/68 ,  D21H23/14 ,  D21H

公开(公告)号：NO990078L

公开(公告)日：1999-01-08

申请号：NO990078

申请日：1999-01-08

Applicant: BASF AG

Inventor： DYLLICK-BRENZINGER RAINER ,  MEIXNER HUBERT ,  LINHART FRIEDRICH ,  M NCH DIETMAR ,  GERBER KLAUS-DIETER ,  DIRKS BERND ,  BAUMANN PETER

IPC: D21H17/45 ,  D21H17/29 ,  D21H17/37 ,  D21H17/56 ,  D21H17/68 ,  D21H23/14

公开(公告)号：CA2221515A1

公开(公告)日：1997-02-06

申请号：CA2221515

申请日：1996-07-09

Applicant: BASF AG

Inventor： RUEBENACKER MARTIN ,  DENZINGER WALTER ,  M NCH DIETMAR ,  STANGE ANDREAS ,  SCHUHMACHER RUDOLF ,  LORENCAK PRIMOZ ,  NILZ CLAUDIA

IPC: C08B37/00 ,  C08F8/12 ,  C08F261/04 ,  C08F263/02 ,  C08F283/06 ,  C08F291/00 ,  C09D7/45 ,  D21H17/34 ,  D21H17/37 ,  D21H21/10 ,  D21H21/14 ,  D21H21/16 ,  D21H21/18 ,  C09D7/02 ,  C08F291/06 ,  D21H17/36

Abstract: Graft polymers obtainable by the radically initiated polymerisation of (A) monomers or monomer mixture of (a) 1 to 100 wt.% N-vinyl carboxylic acid amides of the formula (I) in which R1, R2 = H and C1 to C6 alkyl, (b) 0 to 99 wt.% other monoethylenically unsaturated monomers copolymerisable with the monomers (a), and (c) 0 to 5 wt.% of at least two ethylenically unsaturated monomers with unconjugated double bonds in the molecule; in the presence of (B) polymers containing units of vinyl esters of saturated C1 to C4 carboxylic acids and/or vinyl alcohol units, or mixtures containing these polymers and polymers containing at least 3 alkylene oxide units or polytetrahydrofurane; in the ratio by weight (A) : (B) of (95 to 10) : (5 to 90), possibly followed by the separation of the group (II) from the polymerised monomers (I) of the graft polymer, with the formation of units of the formula (III); process for the production of the graft polymers and use of the graft polymers described above in the production of paper, paperboard and cardboard as a dry and wet strengthening agent, as a retention and dewatering agent and as a promoter in diketene gumming and as a starch cationisation agent, as a dispersant for pigments and as a creping auxiliary in the production of tissue papers.